/*
 * Thickbox 3.1-byrne - One Box To Rule Them All.
 * By Cody Lindley (http://www.codylindley.com)
 * Modifications by Byrne Reese (http://www.majordojo.com/)
 * Copyright (c) 2007 Cody Lindley
 * Copyright (c) 2009 Byrne Reese
 * Licensed under the MIT License: http://www.opensource.org/licenses/mit-license.php
*/
(function($){
  $.fn.thickbox = function(options) {
    var settings = $.extend( {}, $.fn.thickbox.defaults, options);
    var imgLoader = new Image(); // preload image
    imgLoader.src = settings.loadingImage;
    return this.each(function() {
	obj = $(this);
	obj.click(function(){
	    var t = this.title || this.name || null;
	    var a = this.href || this.alt;
	    var g = this.rel || false;
	    tb_show(t,a,g);
	    this.blur();
	    return false;
	  });
      });
    function tb_show(caption, url, imageGroup) {//function called when the user clicks on a thickbox link
      try {
	if (typeof document.body.style.maxHeight === "undefined") {//if IE 6
	  $("body","html").css({height: "100%", width: "100%"});
	  $("html").css("overflow","hidden");
	  if (document.getElementById("TB_HideSelect") === null) {//iframe to hide select elements in ie6
	    $("body").append("<iframe id='TB_HideSelect'></iframe><div id='TB_overlay'></div><div id='TB_window'></div>");
	    $("#TB_overlay").click(tb_remove);
	  }
	}else{//all others
	  if(document.getElementById("TB_overlay") === null){
	    $("body").append("<div id='TB_overlay'></div><div id='TB_window'></div>");
	    $("#TB_overlay").click(tb_remove);
	  }
	}
	
	if(tb_detectMacXFF()){
	  //use png overlay so hide flash
	  $("#TB_overlay").addClass("TB_overlayMacFFBGHack");
	  $("#TB_overlay").css({
  	        'background-image'  : 'url('+settings.macFFBgHack+')',
		'background-repeat' : 'repeat'
		});
	}else{
	  $("#TB_overlay").addClass("TB_overlayBG");//use background and opacity
	}
	
	if(caption===null){caption="";}
	$("body").append("<div id='TB_load'><img src='"+imgLoader.src+"' /></div>");//add loader to the page
	$('#TB_load').show();//show loader
	
	var baseURL;
	if(url.indexOf("?")!==-1){ //ff there is a query string involved
	  baseURL = url.substr(0, url.indexOf("?"));
	}else{ 
	  baseURL = url;
	}
	
	var urlString = /\.jpg$|\.jpeg$|\.png$|\.gif$|\.bmp$/;
	var urlType = baseURL.toLowerCase().match(urlString);
	
	if(urlType == '.jpg' || urlType == '.jpeg' || urlType == '.png' || urlType == '.gif' || urlType == '.bmp'){//code to show images
	  
	  TB_PrevCaption = "";
	  TB_PrevURL = "";
	  TB_PrevHTML = "";
	  TB_NextCaption = "";
	  TB_NextURL = "";
	  TB_NextHTML = "";
	  TB_imageCount = "";
	  TB_FoundURL = false;
	  if(imageGroup){
	    TB_TempArray = $("a[rel="+imageGroup+"]").get();
	    for (TB_Counter = 0; ((TB_Counter < TB_TempArray.length) && (TB_NextHTML === "")); TB_Counter++) {
	      var urlTypeTemp = TB_TempArray[TB_Counter].href.toLowerCase().match(urlString);
	      if (!(TB_TempArray[TB_Counter].href == url)) {						
		if (TB_FoundURL) {
		  TB_NextCaption = TB_TempArray[TB_Counter].title;
		  TB_NextURL = TB_TempArray[TB_Counter].href;
		  TB_NextHTML = "<span id='TB_next'>&nbsp;&nbsp;<a href='#'>Next &gt;</a></span>";
		} else {
		  TB_PrevCaption = TB_TempArray[TB_Counter].title;
		  TB_PrevURL = TB_TempArray[TB_Counter].href;
		  TB_PrevHTML = "<span id='TB_prev'>&nbsp;&nbsp;<a href='#'>&lt; Prev</a></span>";
		}
	      } else {
		TB_FoundURL = true;
		TB_imageCount = "Image " + (TB_Counter + 1) +" of "+ (TB_TempArray.length);											
	      }
	    }
	  }
	  
	  imgPreloader = new Image();
	  imgPreloader.onload = function(){		
	    imgPreloader.onload = null;
	    
	    // Resizing large images - orginal by Christian Montoya edited by me.
	    var pagesize = tb_getPageSize();
	    var x = pagesize[0] - 150;
	    var y = pagesize[1] - 150;
	    var imageWidth = imgPreloader.width;
	    var imageHeight = imgPreloader.height;
	    if (imageWidth > x) {
	      imageHeight = imageHeight * (x / imageWidth); 
	      imageWidth = x; 
	      if (imageHeight > y) { 
		imageWidth = imageWidth * (y / imageHeight); 
		imageHeight = y; 
	      }
	    } else if (imageHeight > y) { 
	      imageWidth = imageWidth * (y / imageHeight); 
	      imageHeight = y; 
	      if (imageWidth > x) { 
		imageHeight = imageHeight * (x / imageWidth); 
		imageWidth = x;
	      }
	    }
	    // End Resizing
	    
	    TB_WIDTH = imageWidth + 30;
	    TB_HEIGHT = imageHeight + 60;
	    $("#TB_window").append("<a href='' id='TB_ImageOff' title='Close'><img id='TB_Image' src='"+url+"' width='"+imageWidth+"' height='"+imageHeight+"' alt='"+caption+"'/></a>" + "<div id='TB_caption'>"+caption+"<div id='TB_secondLine'>" + TB_imageCount + TB_PrevHTML + TB_NextHTML + "</div></div><div id='TB_closeWindow'><a href='#' id='TB_closeWindowButton' title='Close'>close</a> or Esc Key</div>"); 		
	    
	    $("#TB_closeWindowButton").click(tb_remove);
	    
	    if (!(TB_PrevHTML === "")) {
	      function goPrev(){
		if($(document).unbind("click",goPrev)){$(document).unbind("click",goPrev);}
		$("#TB_window").remove();
		$("body").append("<div id='TB_window'></div>");
		tb_show(TB_PrevCaption, TB_PrevURL, imageGroup);
		return false;	
	      }
	      $("#TB_prev").click(goPrev);
	    }
	    
	    if (!(TB_NextHTML === "")) {		
	      function goNext(){
		$("#TB_window").remove();
		$("body").append("<div id='TB_window'></div>");
		tb_show(TB_NextCaption, TB_NextURL, imageGroup);				
		return false;	
	      }
	      $("#TB_next").click(goNext);
	      
	    }
	    
	    document.onkeydown = function(e){ 	
	      if (e == null) { // ie
		keycode = event.keyCode;
	      } else { // mozilla
		keycode = e.which;
	      }
	      if(keycode == 27){ // close
		tb_remove();
	      } else if(keycode == 190){ // display previous image
		if(!(TB_NextHTML == "")){
		  document.onkeydown = "";
		  goNext();
		}
	      } else if(keycode == 188){ // display next image
		if(!(TB_PrevHTML == "")){
		  document.onkeydown = "";
		  goPrev();
		}
	      }	
	    };
	    
	    tb_position();
	    $("#TB_load").remove();
	    $("#TB_ImageOff").click(tb_remove);
	    $("#TB_window").css({display:"block"}); //for safari using css instead of show
	  };
	  
	  imgPreloader.src = url;
	}else{//code to show html
	  
	  TB_WIDTH = (settings.width) + 30; //defaults to 630 if no paramaters were added to URL
	  TB_HEIGHT = (settings.height) + 40; //defaults to 440 if no paramaters were added to URL
	  ajaxContentW = TB_WIDTH - 30;
	  ajaxContentH = TB_HEIGHT - 45;
	  
	  if(settings.iframe){// either iframe or ajax window		
	    urlNoQuery = url.split('TB_');
	    $("#TB_iframeContent").remove();
	    if(!settings.modal){//iframe no modal
	      $("#TB_window").append("<div id='TB_title'><div id='TB_ajaxWindowTitle'>"+caption+"</div><div id='TB_closeAjaxWindow'><a href='#' id='TB_closeWindowButton' title='Close'>close</a> or Esc Key</div></div><iframe frameborder='0' hspace='0' src='"+urlNoQuery[0]+"' id='TB_iframeContent' name='TB_iframeContent"+Math.round(Math.random()*1000)+"' onload='tb_showIframe()' style='width:"+(ajaxContentW + 29)+"px;height:"+(ajaxContentH + 17)+"px;' > </iframe>");
	    }else{//iframe modal
	      $("#TB_overlay").unbind();
	      $("#TB_window").append("<iframe frameborder='0' hspace='0' src='"+urlNoQuery[0]+"' id='TB_iframeContent' name='TB_iframeContent"+Math.round(Math.random()*1000)+"' onload='tb_showIframe()' style='width:"+(ajaxContentW + 29)+"px;height:"+(ajaxContentH + 17)+"px;'> </iframe>");
	    }
	  }else{// not an iframe, ajax
	    if($("#TB_window").css("display") != "block"){
	      if(!settings.modal){//ajax no modal
		$("#TB_window").append("<div id='TB_title'><div id='TB_ajaxWindowTitle'>"+caption+"</div><div id='TB_closeAjaxWindow'><a href='#' id='TB_closeWindowButton'>close</a> or Esc Key</div></div><div id='TB_ajaxContent' style='width:"+ajaxContentW+"px;height:"+ajaxContentH+"px'></div>");
	      }else{//ajax modal
		$("#TB_overlay").unbind();
		$("#TB_window").append("<div id='TB_ajaxContent' class='TB_modal' style='width:"+ajaxContentW+"px;height:"+ajaxContentH+"px;'></div>");	
	      }
	    }else{//this means the window is already up, we are just loading new content via ajax
	      $("#TB_ajaxContent")[0].style.width = ajaxContentW +"px";
	      $("#TB_ajaxContent")[0].style.height = ajaxContentH +"px";
	      $("#TB_ajaxContent")[0].scrollTop = 0;
	      $("#TB_ajaxWindowTitle").html(caption);
	    }
	  }
	  
	  $("#TB_closeWindowButton").click(tb_remove);
	  
	  if(settings.inlineId){	
	    $("#TB_ajaxContent").append($('#' + settings.inlineId).children());
	    $("#TB_window").unload(function () {
		$('#' + settings.inlineId).append( $("#TB_ajaxContent").children() ); // move elements back when you're finished
	      });
	    tb_position();
	    $("#TB_load").remove();
	    $("#TB_window").css({display:"block"}); 
	  }else if(settings.iframe) {
	    tb_position();
	    if($.browser.safari){//safari needs help because it will not fire iframe onload
	      $("#TB_load").remove();
	      $("#TB_window").css({display:"block"});
	    }
	  }else{
	    $("#TB_ajaxContent").load(url += "&random=" + (new Date().getTime()),function(){//to do a post change this load method
		tb_position();
		$("#TB_load").remove();
		$("#TB_ajaxContent a.thickbox").thickbox(settings);
		$("#TB_window").css({display:"block"});
	      });
	  }
	  
	}
	
	if(!settings.modal){
	  document.onkeyup = function(e){ 	
	    if (e == null) { // ie
	      keycode = event.keyCode;
	    } else { // mozilla
	      keycode = e.which;
	    }
	    if(keycode == 27){ // close
	      tb_remove();
	    }	
	  };
	}
      } catch(e) {
	//nothing here
      }
    };
    //helper functions below
    function tb_showIframe(){
      $("#TB_load").remove();
      $("#TB_window").css({display:"block"});
    };
    function tb_remove() {
      $("#TB_imageOff").unbind("click");
      $("#TB_closeWindowButton").unbind("click");
      $("#TB_window").fadeOut("fast",function(){$('#TB_window,#TB_overlay,#TB_HideSelect').trigger("unload").unbind().remove();});
      $("#TB_load").remove();
      if (typeof document.body.style.maxHeight == "undefined") {//if IE 6
	$("body","html").css({height: "auto", width: "auto"});
	$("html").css("overflow","");
      }
      document.onkeydown = "";
      document.onkeyup = "";
      return false;
    };
    function tb_position() {
      $("#TB_window").css({marginLeft: '-' + parseInt((TB_WIDTH / 2),10) + 'px', width: TB_WIDTH + 'px'});
      if ( !(jQuery.browser.msie && jQuery.browser.version < 7)) { // take away IE6
	$("#TB_window").css({marginTop: '-' + parseInt((TB_HEIGHT / 2),10) + 'px'});
      }
    };
    function tb_getPageSize(){
      var de = document.documentElement;
      var w = window.innerWidth || self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;
      var h = window.innerHeight || self.innerHeight || (de&&de.clientHeight) || document.body.clientHeight;
      arrayPageSize = [w,h];
      return arrayPageSize;
    };
    function tb_detectMacXFF() {
      var userAgent = navigator.userAgent.toLowerCase();
      if (userAgent.indexOf('mac') != -1 && userAgent.indexOf('firefox')!=-1) {
	return true;
      }
    };
  };
  $.fn.thickbox.defaults = {
  modal: 0,
  inlineId: null,
  iframe: false,
  width: 600,
  height: 400,
  macFFBgHack: '../images/macFFBgHack.png',
  loadingImage: '../images/thickbox-loading.gif'
  };
})(jQuery);
